1. Chamber Background Friday 11.04.2008

2. Lights on 10:39 Long DMA has a leak… ignore the first few points.. An update is in the next slide..

3. Problem solved.. There was a small blockage in the aerosol inlet line of the long DMA… 11:19 scan onwards are OK

4. 70 min of lights on

5. 5 hours after lights on

6. cToF AMS The new c-ToF AMS arrived yesterday and we managed to set it up and get it to sample from 15:34 to 16:24 today (still needs size and IE cals to be done)..

7. Lights off 16:39

8. Post-exp complete O3 = 2540ppb